High-Precision CMM Worktable
Why Premium Precision Granite (Jinan Qing) is the First Choice
Extremely long-term dimensionay, virtually permanent deformation resistance
Natural granite has undergone natural aging over hundreds of millions of years, completely releasing internal stresses. Unlike cast iron or steel, it does not cr, deform, or age over time, perfectly matching the high-precision reference requirements of CMMs.
Extremely low coefficient of thermal expansion, minimal temperature influence
Granite’s thermal expansion andtraction are far less than steel or aluminum. Slight workshop temperature differences or room temperature fluctuations will not cause deformation of the table surface, ensuring more stable measurement repeatability.
Hgh rigidity, high damping, excellent anti-vibration performance
With high density and excellent shock absorption, it can counteract ground vibrations and equipment operational vibrations, ensuring precise and drift-free scanning and touch-probe measurements.
Rust-proof, non-magnetic, corrosion-resistant
It does not rust or oxidize, is immune to magnetic field interference, and is resistant rrosion from cutting fluids, oil stains, and moisture, ensuring the working surface precision does not degrade with long-term use.
Extremely easy to machine with ultra-high flass
It can be precision ground to achieve micron and sub-micron level flatness. The surface is smooth and uniform, serving as a CMM reference surface with minimal tolerance and extremely high onformity.
Wear-resistant, high hardness, resistant to scratches
With high Mohs hardness, it is not prone to burrs or protrusions during daily cleaning or tooling loadin, preventing interference with probe measurement values.
Material consistency with CMM crossbeam and column
The entire machine undergoes synchronous thermal deformation, avoiding relative errors caused by temperature differences between components, sly improving overall measurement accuracy.
